Grapple



c. H.,BR0WN.

GRAPPLE.

APPLICATION FILED DEC.18, 1920.

1,421, 159. Patented June 27, 1922.

UNITED i STATES CHARLES HENRY "BROWN, or RANGER, TEXAS.

GRAPPLE.

Specification of LettersrPatent. Patented June 27, 1922.

Application filed December 18, 1920. Serial No. 431,722.`

To all 11i/710my it may concern:

Be it known that I, CHARLES H. BROWN, a citizen of the United States, vand a resident of Ranger, in the county of Eastland and State of Texas, have invented certain new and useful Improvements in Grapples.

This invention relates to grapples especially adaptedv for use ,in recovering small artcles suchas undereamer lugs and small chippings of cases.

The invention froming the subject matter of this application aims to provide a tool of the class described having's'imple means for gripping an under-reamer lugv or the like to permit of the removal of the under-reamery vide a device of the class described having simple means whereby the same'pmay be adjusted for use in connect-ion with holes of various sizes. y

A further object of the invention is to provide a device of the class described which is simple in use, of highly simplified construction and cheap to manufacture.

Other objects and advantages o-f the invention will be apparent during the course ofthe following description.

In the accompanying drawing forming a part of this application-and in which like numerals are employed to designate like parts throughout the same, Y

Figure 1 is aV longitudinal sectional view through the device in use.

Figure 2 is a detail sectional viewthrough the same, the view illustrating the device being engaged with an under-reamer lug,`

Figure 3 is an end elevation of the'device.

Figure 4 is a horizontal sectional view taken on the line 4-4 of Figure 1. j

Figure 5` is a detail sectional view through the device, illustrating the means whereby the device may be adjusted for use in connection with holes of variousdiameters.

In the drawing wherein for the purpose of illustration is shown the preferred embodiment of the invention, the numeral 10 designates the shank of the device, which shank is adapted for connection with a controlling member 12 through the medium of an attaching member'13. A barrel 14 is formed on the forward end of theshank 1() and is adapted to be introduced into a hole being drilled whenit is desired to recover an.

under-reamer lug or other small article. The member 14 which is of tubular formation has its forward end open and has its rear end closed and formed with a boss 15 to which a plurality of spaced parallel arms 16 are welded or otherwiseA secured. The spaced parallel spring -'arms 16 extend forwardly from the boss 15 and terminate beyond the forward end of the tubular member 14 so as to be in a position to grip an under-reamer lug 17. The extended portions of the spring arms 16are formed with outwardly directed triangular barbs 18 one of which is adapted to be received within the .opening 19 inA the rear portion of the under-rea-mer lug 17. As the tubular member 14 is introduced into the opening 20, the forward beveled portions of the triangular bar 18 contact with the rear portion of the lug 17 whereuponone of the spring arms moves inwardly and the barb of that arm is consequently received within the opening 19, whereby the barb is securely connected to thelug. i

i As illustrated in Figure 2', the collar 22 is threaded on the forward portion of the tubular member 14 and is adjustable with' relation to the same so that the dist-ance betweenfthe barbs 18 and the "collar 22y may be varied to meet operating conditions Since the collar 22 forms a vpart ofthe tubular body 14 it might be stated that the tubular body-14 is adjustable with relation to the barbs. When it is desired to use the device in holes somewhat wider than the -diameter ofthe tubular member an'r annular shoulder 24 may be secured to the forward portion of the tubular member and the collar 22 through the medium` of bolts 26which are adjustable within longitudinal slots 27 formed in the forward portion of the tubular body 14.

VThe annular lshoulder 24 when applied in-V creases the diameter of the tubularbody of the forward portion of the same and thereby forwardly or rearwardly.

The spring arms may be spread to correspondingly spread the barbs 18 when .using the device in wide holes. The means for spacing the barbs 18 includes an adjusting .serves to guide the tubular body Awhen moved ymember` 27 which is located between the ends of the spring arm to contact with the offset portions 28 of the same. The adjusting member 27 which is inthe form of a cone is mounted on a' screw threaded rod 30.y Adjusting member 27 is held in a set position Vcollar adjustable barbs.

by a nut 31 against the tension of a retractile coiled spring mounted on the member 30 inwardly of the spring arms.

X/Vhen it is desired to increase the Zone of action of the barbs it is merely necessary to rgreater than the diameter of the tubular casing 14. j

In the use of the device, the same is inserted into a hole being drilled forthe purpose of recovering the lug 1? which iii some cases lodges as illustrated in Figure 2. When one of the barbs 18 engages with the lug, the device is moved rearwardly and 'the lug assumes the position illustrated in Figure 1. `Pieces of casing and the like Lmayalso be readily removed by means of this device. n

Having thus fully described 'my-invention "what I claim as new is t- 1. A device of the class described comprisinga tubular member having its forward end open, and a plurality of spring arms carried by the tubular member and formed withbarbs, the forward portion of said tubular member being provided with a with relation to said 21A device of the class described comprising a body having its forward end open, a plurality of spring arms carried by said body and terminating beyond the forward end 4of the same, the forward end portions `of said spring larms being formed with barbs, the forward portion of said tubular member being provided with a collar adjustable with relation to said barbs.

A device of the class described comprising a body having its `forward end open, a yplurality of vspring arms arranged in said body and terminating beyond the forwardend of the same, the extended forward end `portions of said spring arms being formed with gripping means, and an adjusting device associated with said arms, the forward portion of said tubular member being provided with a collar adjustable with relation to said barbs. y

4. A device of the class described comprising a body, a plurality offspring arms carried by said body and formed with gripping means beyond the forward end of said body, and means whereby the space between the barbs and the body may be varied.

5. A device of the class described comprising a tubular member having a boss, a plurality lof spring arms secured to said boss and terminating beyond the forward end of Anut threaded on said said tubular member, the forward end portions of said spring arms being provided j with barbs, a collar threaded on said tubular member and adjustable wit-h relation to said barbs, and adjusting means for said barbs.

6. A device of the class described comprising a tubular member having a centrally arranged boss at its rear end, a plurality of spaced spring arms secured to said boss and terminating beyond the forward end of said tubular member, the forward ends of said spring arms being formed with outwardly directed barbs, the intermediate portions of said spring arms being odset, and an adjusting device arranged between said arms and engaged with the offset portions of the same.

7. A device of the class described comprising a tubular member having its forward end open, a bore arranged centrally in the vrear portion of said tubular member, a plurality of'spring arms secured to said boss and `terminating beyond the forward end of said tubular member, the forward portions of said tubular member being provided with gripping means, the intermediate portions of said spring arms being offset, an adjusting device in the form of a cone arranged between said spaced arms to contact lwith the roffset portion of the same, an adjusting nut contacting with said adjusting device, a rod extending through said adjusting device and having threaded engagement with said nut, and `a spring arranged on said rod and contacting with said adjusting device.

8. A device of the class described comprising a tubular member, a plurality of spring arms extending through the tubular member and having its intermediate portions offset, an adjusting device engaged with the intermediate yoffset portions of said spring arms, and spring means to urge the adjusting device to its inoperative position.

9. A device of the class described comprising al tubular member, a plurality of spring arms extending through the tubular member and having its intermediate portions offset,

an adjusting device engaged'with the interkplurality of spring arms connected to said boss and terminating beyond the tubular member, a rod connected to said boss between said arms, an adjusting cone arranged o n said rod and engaged with the offset portions of'said spring arms, and an adjustin rod for adjusting sai adjusting member.

CHARLES HENRY BROWN.,- 

